EP 3457025 A1 20190320 - AUTOMOTIVE HEADLIGHT
Title (en)
AUTOMOTIVE HEADLIGHT
Title (de)
KRAFTFAHRZEUGSCHEINWERFER
Title (fr)
PHARE DE VÉHICULE AUTOMOBILE
Publication
Application
Priority
JP 2017173953 A 20170911
Abstract (en)
An automotive headlight includes: a light source for emitting light; a polarization beam splitter for receiving a light flux from the light source, and dividing the light flux into a first polarization and a second polarization; a liquid crystal element disposed to receive the first polarization and the second polarization, divided by the polarization beam splitter; a phase shifter disposed on optical axis of one of the first polarization and the second polarization, and aligning polarization axis directions of the first polarization and the second polarization; and an output side polarizer disposed on output side of the liquid crystal element, wherein illumination regions corresponding to respective control electrodes in the liquid crystal element can be controlled to shield light.
IPC 8 full level
F21S 41/20 (2018.01); F21S 41/64 (2018.01)
CPC (source: CN EP US)
F21S 41/285 (2017.12 - EP US); F21S 41/30 (2017.12 - US); F21S 41/645 (2017.12 - CN EP US); G02B 27/283 (2013.01 - CN US); G02B 27/286 (2013.01 - CN); G02F 1/133528 (2013.01 - CN); G02F 1/13363 (2013.01 - CN); G02F 1/133548 (2021.01 - CN); G02F 1/133638 (2021.01 - CN)
Citation (applicant)
- JP 2010176981 A 20100812 - STANLEY ELECTRIC CO LTD
- DE 102013113807 A1 20150611 - HELLA KGAA HUECK & CO [DE]
- JP 2013054849 A 20130321 - KOITO MFG CO LTD
Citation (search report)
- [XI] DE 102014113700 A1 20160324 - HELLA KGAA HUECK & CO [DE]
- [I] DE 102015115348 A1 20170316 - HELLA KGAA HUECK & CO [DE]
- [A] KR 100557544 B1 20060303
- [A] FR 2179834 A1 19731123 - BOSCH GMBH ROBERT [DE]
- [A] JP 2011243366 A 20111201 - STANLEY ELECTRIC CO LTD
- [A] EP 1351015 A2 20031008 - HONDA MOTOR CO LTD [JP]
- [A] JP 2005071731 A 20050317 - CAR MATE MFG
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3457025 A1 20190320; CN 109491100 A 20190319; CN 109491100 B 20220624; JP 2019050134 A 20190328; JP 6952541 B2 20211020; US 10571090 B2 20200225; US 2019078749 A1 20190314
DOCDB simple family (application)
EP 18193528 A 20180910; CN 201811056439 A 20180911; JP 2017173953 A 20170911; US 201816125676 A 20180908